Key result
ICM exhibits lower LA expansion, active EF, and strain compared to DCM.
Why the study?
Differences in left atrial function between ischemic and idiopathic dilated cardiomyopathy patients were not well characterized using two-dimensional speckle-tracking imaging.
Does two-dimensional speckle-tracking imaging differentiate left atrial function between patients with ischemic and idiopathic dilated cardiomyopathy?
Population
Patients with ischemic or idiopathic dilated cardiomyopathy
Comparison
Ischemic cardiomyopathy vs idiopathic dilated cardiomyopathy
Design
Observational study using two-dimensional speckle-tracking imaging
Authors
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Speckle-tracking may differentiate left atrial function in ischemic versus dilated cardiomyopathy; hypothesis-generating and should not yet change practice.
Observational
Does two-dimensional speckle-tracking imaging differentiate left atrial function between patients with ischemic and idiopathic dilated cardiomyopathy?
p-value: p=<0.05
Two-dimensional speckle-tracking imaging can detect differences in left atrial function between ischemic and idiopathic dilated cardiomyopathy that are not apparent with basic echocardiographic variables.
Cao et al. (2016) conducted an observational in Ischemic or idiopathic dilated cardiomyopathy. Ischemic cardiomyopathy vs. Idiopathic dilated cardiomyopathy was evaluated on Left atrial function parameters (expansion index, active ejection fraction, strain, and strain rate) (p=<0.05). Left atrial expansion index, active ejection fraction, and systolic and late diastolic strain were significantly lower in patients with ischemic compared to dilated cardiomyopathy (p<0.05).
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